9.4.1 SQL Aggregate Functions

Beberapa aggregate functions:
• AVG() – menghitung rata-rata
SELECT avg(hargajual)FROM produk
SELECT kodesub, avg(hargajual)FROM produk GROUP BY kodesub
• COUNT() – menghitung jumlah baris
SELECT count(hargajual)FROM produk
SELECT kodesub, count(hargajual)FROM produk GROUP BY kodesub
• MAX() – menampilkan nilai terbesar
SELECT max(hargajual)FROM produk
SELECT kodesub, max(hargajual)FROM produk GROUP BY kodesub
• MIN() – menampilkan nilai terkecil
SELECT min(hargajual)FROM produk
SELECT kodesub, min(hargajual)FROM produk GROUP BY kodesub
• SUM() – menampilkan jumlah nilai
SELECT sum(hargajual)FROM produk
SELECT kodesub, sum(hargajual)FROM produk GROUP BY kodesub

 


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